72272412 has 30 divisors (see below), whose sum is σ = 188935208. Its totient is φ = 24090696.

The previous prime is 72272411. The next prime is 72272413. The reversal of 72272412 is 21427227.

It is an interprime number because it is at equal distance from previous prime (72272411) and next prime (72272413).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72272411) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 111208 + ... + 111855.

Almost surely, 2^72272412 is an apocalyptic number.

It is an amenable number.

72272412 is an abundant number, since it is smaller than the sum of its proper divisors (116662796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72272412 is a wasteful number, since it uses less digits than its factorization.

72272412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223079 (or 223068 counting only the distinct ones).

The product of its digits is 3136, while the sum is 27.

The square root of 72272412 is about 8501.3182507185. The cubic root of 72272412 is about 416.5407707822.

Adding to 72272412 its reverse (21427227), we get a palindrome (93699639).

It can be divided in two parts, 72 and 272412, that added together give a square (272484 = 522²).

The spelling of 72272412 in words is "seventy-two million, two hundred seventy-two thousand, four hundred twelve".